61632319 has 4 divisors (see below), whose sum is σ = 70436944. Its totient is φ = 52827696.

The previous prime is 61632313. The next prime is 61632323. The reversal of 61632319 is 91323616.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61632319 is a prime.

It is a super-2 number, since 2×61632319² = 7597085490635522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61632313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4402302 + ... + 4402315.

It is an arithmetic number, because the mean of its divisors is an integer number (17609236).

Almost surely, 2^61632319 is an apocalyptic number.

61632319 is a deficient number, since it is larger than the sum of its proper divisors (8804625).

61632319 is an equidigital number, since it uses as much as digits as its factorization.

61632319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8804624.

The product of its digits is 5832, while the sum is 31.

The square root of 61632319 is about 7850.6253891012. The cubic root of 61632319 is about 395.0052213164.

The spelling of 61632319 in words is "sixty-one million, six hundred thirty-two thousand, three hundred nineteen".